CN203669910U

CN203669910U - Anti-explosion well lid

Info

Publication number: CN203669910U
Application number: CN201420030989.6U
Authority: CN
Inventors: 于美鲁
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-17
Filing date: 2014-01-17
Publication date: 2014-06-25
Anticipated expiration: 2024-01-17

Abstract

The utility model relates to an anti-explosion well lid which comprises a well lid body, a main control center, a signal receiving device, a signal transmitting device, a sensing bolt, damping materials, a powerful magnetic element, a wheel and a track. The well lid body is connected with a heavy hammer through a pulley and a rope and moves on the track through the wheel, and the damping materials and the powerful magnetic element are installed at the upper end of the track; the main control center controls the signal transmitting device to sent out signals; the signal transmitting device controls the sensing bolt to be retracted and opened through the sent-out signals; the signal receiving device receives wind-direction-change sensing signals sent out by a sensing element installed in a tunnel. By means of the anti-explosion well lid, under the condition that powerful shock wave energy occurs in a well, the shock wave energy can be released in time; meanwhile, after the shock wave energy is eliminated, the ventilation state can be recovered in time, and the stability and the reliability of a mine ventilation system can be guaranteed.

Description

A kind of Antiexplosive manhole cover

Technical field

The utility model relates to a kind of well lid, is specifically related to a kind of Antiexplosive manhole cover.

Background technology

Coal mine return air vertical generally uses hat type Explosion-proof cap now, and its structure is made up of the airtight cap of circle, counter-balanced carriage, balancing weight, liquid airproof groove and sealing fluid, and entirety is a round cap being buckled on vertical shaft head.In the time that gas explosion accident occurs in down-hole, although this hat type Explosion-proof cap can discharge the shock wave energy of blast in time, but still there is following defect:

1. owing to can not avoiding the front energy of shock wave, (hat type Explosion-proof cap is an entirety, cannot avoid shock wave, therefore be hit, ripple positive effect is larger), easily damaged by powerful impact air-flow, or fly away from well head, be subject to the uneven or ground wind action at that time of counterweight, body, pull rope, well lid is difficult to return in time original position, cause ventilation system to recover more difficult, cannot guarantee that the ventilation of mine is reliable and stable.If well lid flies away from original position or distortion, need to employ crane and just can complete the work that recovers well lid, cause major safety risks to immediate recovery mine ventilation system;

2. in the time of needs inverted ventilation, fixing more difficult.

Consider from security standpoint, effect and requirement that coal mine return air vertical Antiexplosive manhole cover should reach are:

1. can discharge in time explosion energy, protection blower fan is not damaged by the shock wave of gas accident;

2. shock wave can reset later in time, reliable and stable to guarantee mine ventilation system;

3. in the time of down-hole breaking out of fire accident, can in time, easily fix well lid, implement inverted ventilation function.

Utility model content

For addressing the above problem, technical problem to be solved in the utility model is to provide a kind of Antiexplosive manhole cover.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of Antiexplosive manhole cover, comprises well lid, main control centre, signal receiving device, signal transmitting apparatus, induction latch, damping material, strong magnetic element, wheel and track; Described well lid is connected weight by pulley with rope; And described well lid moves on described track by described wheel, described damping material and strong magnetic element are housed in the upper end of described track; Described main control centre control signal transmitting device sends signal; Described signal transmitting apparatus is responded to the withdrawal of latch and opens by sending described in signal controlling; Described signal receiving device reception is contained in sensing element in tunnel and sends the signal of experiencing wind vector.

Further, described induction latch is on described track.

Further, described pulley, rope and weight have multiple.

Further, be provided with oil groove in described well lid bottom, between described well lid and oil groove, be provided with the oil for sealing.

Further, described well lid is that steel fibrous concrete is made.

Further, described weight counterweight meets formula: (Δ PS+G)/(ngcos φ)≤m≤M/ (ncos θ) wherein, the differential static pressure that △ P-be Explosion-proof cap is inside and outside, N; The pressure effective area of S---Explosion-proof cap, m2; The gravity of G-described well lid (12), N; The number of n-described weight (10), individual; The angle of φ-described rope and vertical direction; The quality of m-described weight (10), kg; The quality of M-described well lid (12), Kg.

The beneficial effects of the utility model are: the in the situation that a kind of Antiexplosive manhole cover that the utility model provides occurring powerful shock wave energy in down-hole, release of shock wave energy in time, simultaneously after shock wave energy is eliminated, can return in time ventilation state, guarantee the reliability of mine ventilation system.

Accompanying drawing explanation

Fig. 1 is the utility model overall structure schematic diagram.

In accompanying drawing, the list of parts of each label representative is as follows:

1, track, 2, induction latch, 3, cable, 4, signal transmitting apparatus, 5, signal receiving device, 6, main control centre, 7, damping material, 8, strong magnetic element, 9, pulley, 10, weight, 11, wheel, 12, well lid, 13, rope, 14, oil groove

The specific embodiment

Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.

As shown in Figure 1, a kind of Antiexplosive manhole cover, comprises track 1, induction latch 2, signal transmitting apparatus 4, signal receiving device 5, main control centre 6, damping material 7, strong magnetic element 8, wheel 11 and well lid 12; Described well lid 12 is connected weight 10 by pulley 9 with rope 13, and described pulley 9, rope 13 and weight 10 have multiple; And described well lid 12 moves on described track 1 by described wheel 11, and described damping material 7 and strong magnetic element 8 are housed in the upper end of described track 1; Described main control centre 6 is controlled described signal transmitting apparatus 4 and is sent signal; Described signal transmitting apparatus 4 is responded to the withdrawal of latch 2 and opens by sending described in signal controlling, and described induction latch 2 is on described track 1; Described signal receiving device 5 receptions are contained in sensing element in tunnel and send the signal of experiencing wind vector.In the time of mine return air, the sensing element being arranged in tunnel is experienced wind vector, transfer signals to signal receiving device 5, main control centre 6 is made instruction, and signal transmitting apparatus 4 sends signal, and induction is inserted 2 pins and opened immediately, block the wheel 11 on well lid 12, well lid 12 is fixed, and is provided with oil groove 14 in described well lid 12 bottoms, between described well lid 12 and oil groove 14, is provided with the oil for sealing.

Return air finishes, change of the wind, and wind speed is stable, and induction latch 2 is regained immediately, restores to the original state; In the time there is the explosive incidents such as gas, wind speed and direction in tunnel changes, and after sensing element is experienced, main control centre 6 is opened magnetic element 8 immediately, well lid ejects under huge wind-force effect, rise along track 1, stable gradually under the effect of damping material 7, powerful magnetic attraction is lived well lid 12, finish until impact, wind speed etc. are stable, and main control centre 6 disconnects the power supply of magnetic element 8, and well lid 12 is along track 1 slipping phenomena original position.Increase and effectively control well lid when inverted ventilation and make it stable, can be because of distinguished and admirable not reverse and open.

Described well lid 12 is made for steel fibrous concrete.Steel fibrous concrete (SFRC) well lid is to improve and grow up on the basis of original reinforced concrete well lid.It is that in concrete, to add length be the steel fibre of 10-20mm, because a large amount of tiny steel fibres are dispersed in concrete, steel fibre and concrete contact surface are very large, and become irregular radial distribution, almost all make in all directions concrete be enhanced, there is isotropic enhancing, greatly improved concrete properties.

The choose reasonable of counterweight counterweight is the key of the automatic operation of Antiexplosive manhole cover, its counterweight should meet the requirement of formula (Δ PS+G)/(ngcos φ)≤m≤M/ (ncos θ), wherein, Δ P-be the inside and outside differential static pressure of Explosion-proof cap, N; The pressure effective area of S---Explosion-proof cap, m2; The gravity of G-described well lid 12, N; The number of n-described weight 10, individual; The angle of φ-described rope and vertical direction; The quality of m-described weight 10, Kg; The quality of M-described well lid 12, kg.In real work, should often measure the size of natural ventilation pressure, to adjust in time the weight of weight 10.In well lid 10 counterweight spans, should try one's best near lower limit, so that Antiexplosive manhole cover is easy to operate in the time closing.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. an Antiexplosive manhole cover, is characterized in that: comprise that track (1), induction latch (2), signal pass elm device (4), signal receiving device (5), main control centre (6), damping material (7), strong magnetic element (8), wheel (11) and well lid (12); Described well lid (12) is connected weight (10) by pulley (9) with rope (13); And described well lid (12) in the upper motion of described track (1), is equipped with described damping material (7) and strong magnetic element (8) by described wheel (11) in the upper end of described track (1); Described main control centre (6) is controlled described signal transmitting apparatus (4) and is sent signal; Described signal transmitting apparatus (4) is responded to the withdrawal of latch (2) and opens by sending described in signal controlling; Described signal receiving device (5) reception is contained in sensing element in tunnel and sends the signal of experiencing wind vector.

2. a kind of Antiexplosive manhole cover according to claim 1, is characterized in that: described induction latch (2) is on described track (1).

According to claim according to a kind of Antiexplosive manhole cover described in claim 1 or 2, it is characterized in that: described pulley (9), rope (13) and weight (10) have multiple.

4. according to claim a kind of Antiexplosive manhole cover according to claim 1, it is characterized in that: be provided with oil groove (14) in described well lid (12) bottom, between described well lid (12) and oil groove (14), be provided with the oil for sealing.

According to claim according to the arbitrary described a kind of Antiexplosive manhole cover of claim 1 to 4, it is characterized in that: described well lid (12) is made for steel fibrous concrete.

According to claim according to a kind of Antiexplosive manhole cover described in claim 1 or 2, it is characterized in that: described weight (10) counterweight meets formula: (Δ PS+G)/(ngcos φ)≤m≤M/ (ncos θ)

Wherein, Δ P-be the inside and outside differential static pressure of Explosion-proof cap, N; The pressure effective area of S---Explosion-proof cap, m2; The gravity of G-described well lid (12), N; The number of n-described weight (10), individual; The angle of φ-described rope and vertical direction; The quality of m-described weight (10), kg; The quality of M-described well lid (12), Kg.